Omnis, Naasomroth's Czar

Whenever a creature enters the battlefield Bolster 8.
{t} add {u}{w}{r} to your manapool spend this
mana only to cast creatures.
Omnis commands troops of Naasomroth by stricking fear into them, and although he is thought to be the ruler of Udewei it is really Naasomroth pulling strings